Tutorial by Examples: l

NOTE: For brevity, the examples below use the FolderExists function from the Determining If Folders and Files Exist example in this topic. The MkDir statement can be used to create a new folder. It accepts paths containing drive letters (C:\Foo), UNC names (\\Server\Foo), relative paths (..\Foo...

Detailed instructions on getting video-streaming set up or installed.

FreeBSD is known of its well-written handbook (link). The installation process is described in detail in the Chapter 2. Installing FreeBSD.

Detailed instructions on getting computer-vision set up or installed. For this and following series of computer vision, I will be using Python 2 as a programming language. Python is a common choice for the scientific community, it is free, it has a lot of libraries for free and open-source, and if ...

The Runtime.exec(String ...) and Runtime.exec(String) methods allow you to execute a command as an external process1. In the first version, you supply the command name and the command arguments as separate elements of the string array, and the Java runtime requests the OS runtime system to start th...

Detailed instructions on getting google-closure-compiler set up or installed.

Java Virtual Machines (JVMs) can be run with a SecurityManager installed. The SecurityManager governs what the code running in the JVM is allowed to do, based on factors such as where the code was loaded from and what certificates were used to sign the code. The SecurityManager can be installed by ...

This is a screenshot of a video playing. You see a normal 16:9 video like you would expect to see in any modern video solution. This - the aspect ratio that the viewer sees - is what is called the display aspect ratio or DAR. From the illustrated parameters, we see that DAR = 1280:720 = 16:9 = 1....

As the picture aspect ratio example indicates, videos are series of pictures that do not necessarily have the same aspect ratio as the final result to be displayed to the user. So how do you get from those stretched pictures to the normally displayed output? You need a stretching factor! This stret...

This is another name for sample aspect ratio and should be avoided, as the natural acronym (PAR) conflicts with picture aspect ratio.

Consider the following list comprehension Python 2.x2.7 i = 0 a = [i for i in range(3)] print(i) # Outputs 2 This occurs only in Python 2 due to the fact that the list comprehension “leaks” the loop control variable into the surrounding scope (source). This behavior can lead to hard-to-find...

To create a Behavior just extend the CoordinatorLayout.Behavior class. Extend the CoordinatorLayout.Behavior Example: public class MyBehavior<V extends View> extends CoordinatorLayout.Behavior<V> { /** * Default constructor. */ public MyBehavior() { ...

Using a list object you can create a fully functional generic Stack with helper methods such as peeking and checking if the stack is Empty. Check out the official python docs for using list as Stack here. #define a stack class class Stack: def __init__(self): self.items = [] ...

Detailed instructions on getting gerrit set up or installed.

Select the project you want to add the reference to Moq. Open Nuget for this project. Select "Browse" than type "moq" at the search box. Select "Moq" and than click on Install. Following these steps will install the Moq package and will add a reference to it i...

Detailed instructions on getting quickblox set up or installed. Go to https://admin.quickblox.com and click on “Register” at the top or just follow the link: https://admin.quickblox.com/register.

Detailed instructions on getting oracle11g set up or installed.

A table can be joined onto itself in what is known as a self join, combining records in the table with other records in the same table. Self joins are typically used in queries where a hierarchy in the table's columns is defined. Consider the sample data in a table called Employees: IDNameBoss_ID1...

# creates a function with no arguments, which returns 3 get_three = () -> return 3 # same as above get_three = -> 3 # creates a function with arguments add_three = (num) -> num + 3 # multiple arguments, etc. add = (a, b) -> a + b

One application of closures is to partially apply a function; that is, provide some arguments now and create a function that takes the remaining arguments. Currying is a specific form of partial application. Let's start with the simple function curry(f, x) that will provide the first argument to a ...